2

Wikipedia says we need 31 couplers. Can't we do it with 8 couplers?

  • Based on the math in the wiki, (2^4)-1=15. – Ron Maupin Oct 1 '15 at 3:35
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Follow the math in the wiki article: (2^4)-1=15.

  • 2
    Bottom-up - 8 to provide 16 end-points. 4 to provide connections to the 8, 2 to provide connections to the 4, 1 to provide connections to the 2. Not shockingly, still 15.... – Ecnerwal Oct 5 '15 at 14:26

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